How to Trace Your Czech and Slovak Ancestry: A Step-by-Step Guide

Czech and Slovak genealogy rewards patient research, and the records are better than many people expect. Most Czech parish registers are digitized and free online, Slovak registers are widely available through FamilySearch, and censuses and civil records can fill many gaps. The hard parts are the places and the languages: borders and names changed, and registers may be in Latin, German, Hungarian, Czech or Slovak. This guide walks through the whole process, from your own papers to the registers in Central Europe. We checked these details in October 2026, and archive portals, access rules and online collections change, so confirm them before you rely on them.

Step 1: Start with your own family and documents

Write down names, dates and places for yourself, your parents and your grandparents. Collect baptism and marriage certificates, naturalization papers, passports, letters and photographs, and record who gave you each fact. Enter everything in a tree. MyHeritage, our primary recommended platform, lets you attach records as you find them and receive match suggestions. The seven-step starter guide gives a shorter version of this process.

Step 2: Find the exact village and parish

Czech and Slovak records are kept by parish, so “Bohemia” or “Czechoslovakia” is not enough. In the country where your ancestor settled, the best clues are naturalization papers, passenger lists, church and cemetery records and obituaries. Be careful with place names: a Slovak researcher’s guide notes that multiple village names are often used, especially in ship manifests and US-based documents. See how to find your ancestor’s village of origin.

Step 3: Know the record map

The records hub summarizes the same map.

Step 4: Search the digitized registers

Czech regional archives have digitized almost all parish registers, and after digitization the originals are often not accessible in person, according to the Czechoslovak Genealogical Society International. Portals include the archives for Prague, Central Bohemia, Western Bohemia, Southern Bohemia, Northern Bohemia, Southern Moravia and Northern Moravia and Silesia. For Slovakia, FamilySearch’s collection of church and synagogue books for 1592 to 1935 includes images and some indexes from archives in Prešov, Bytča, Košice, Levoča, Banská Bystrica, Nitra and Bratislava. See our comparison of websites and archive portals.

Step 5: Read the registers

• Languages. Czech registers were commonly in Latin in earlier centuries and in German in the Austro-Hungarian period, and Hungarian was used along with Latin and German across the Kingdom of Hungary before 1918.
• Word lists. FamilySearch provides genealogical word lists for Latin, German, Czech, Slovak and Hungarian.
• Handwriting. German registers may be in old German script such as Kurrent.

Our guide to reading Latin, German and Hungarian records covers the headings and the key words.

Step 6: Add censuses and civil records

Czech censuses from 1857 to 1921 can show a whole household, with occupation and place of birth, and some carry margin notes about emigration. Slovak civil registration began on 1 October 1895, and FamilySearch has the 1869 census of Slovakia. See our guide to civil records and censuses.

Step 7: Allow for borders and communities

• Slovakia before 1918 was part of the Kingdom of Hungary, and place names, records and languages reflect that.
• Sudeten and German-speaking Bohemian families often have registers in German. The Western Bohemia portal, Porta fontium, has only a German-language version, according to one guide.
• Carpatho-Rusyn families are often in eastern Slovakia, where dual Slovak and Rusyn names are in use, and not all Greek Catholic records from 1895 to 1950 were preserved.
• Jewish families. The Jewish community registers for the Czech lands are held by the National Archives and digitized, and JewishGen’s project covers Slovak civil records. These communities have specialist resources that we point to but do not cover in depth.

Step 8: Add DNA and consider citizenship

DNA can find cousins and help when records are missing. See the DNA testing hub and, when it is published, our guide to the best DNA test for Czech and Slovak ancestry. If you wonder whether your family documents could support Czech or Slovak citizenship, start with the citizenship guide and the complete guide to Czech and Slovak citizenship by descent. Citizenship rests on documents, not DNA.

Access rules for recent records

Recent Czech registers are kept in registry offices and are closed for 100 years for births and 75 years for marriages, and most guides give 30 years for deaths, though one gives 75, so check the current rule. Access to recent registers requires proof of kinship. In Slovakia, civil registration records less than 100 years old are maintained locally, usually in the village registrar’s office, according to a JewishGen guide.

A realistic order of work

1. First weeks: gather home documents and identify the village from immigration papers.
2. Next: find the parish and the archive, and browse the digitized registers for the baptism or marriage.
3. Then: go back one generation at a time, using the censuses to confirm households.
4. Finally: record every source, reconcile place names and extend the tree.

How the Czech archive network is organized

The Czech Republic has seven regional archives, each with district archives, 72 in all according to the British Czech and Slovak Association, and a State Library of South Australia guide adds five city archives and many specialized archives. The regional archives are the repositories for most pre-1900 parish books, and censuses are usually in the smaller district archives. Knowing which level holds what saves a great deal of writing to the wrong office.

Slovakia: where to start

For Slovakia, begin with FamilySearch’s church and synagogue books, then check which state archive holds the registers for your parish, using the reference Cirkevné matriky na Slovensku zo 16.-19. storočia, which lists every village and the records that exist for it. A 2021 beginning Slovak genealogy handout said that Slovak archives had no searchable online records at that time, so be ready to browse images. See our Slovak records guide.

Working with names

• Given names have equivalents across Czech, German, Hungarian, Slovak and Latin, and published lists of equivalent given names in these languages help you recognize a name in a register.
• Surnames may be spelled differently in Czech, German and Hungarian records of the same family.
• Place names change with the language of the record, as explained in our village-of-origin guide.

Getting help

The British Czech and Slovak Association’s research page links a list of translators and a Košice archive request form as an example of how to write to a Slovak archive, and the Czechoslovak Genealogical Society International has pages for researchers and translators and a Czechia research group on FamilySearch’s community site. A translator can save you months if a record is in a language you cannot read.

Questions to answer before you start

• Which village and parish did my ancestor come from, in which language forms?
• Which archive holds the registers, and are they digitized?
• What denomination did the family belong to?
• Which censuses survive for the village?
• Do I need a translator for the language of the records?

Why Czech research is unusually accessible

Most Czech parish registers are digitized and free to browse through the regional archives. That means a determined researcher can often work from home, from a baptism in the 1800s back through the registers of the 1700s, without paying for access. The cost is time: you will browse images, learn the headings and sometimes read old German script.

Combining Czech and Slovak branches

The Austria-Czech special interest group at JewishGen groups Bohemia, Moravia, Silesia, Slovakia and Subcarpathian Ruthenia together because these groups lived together for more than a generation and intermarried. It is common for a family to have a Czech branch and a Slovak branch, which means two sets of archives, two languages and two sets of place names. Treat each branch with its own method, and link them in your tree.

Keep a research log

Record every register you search, the years you covered and what you found, including negative results. In a network of seven regional archives, dozens of district archives and eight or so Slovak state archives, a log prevents you from searching the same book twice and shows what is left to check.

Common mistakes

• Searching “Czechoslovakia” instead of the parish. Records are kept by parish.
• Trusting one village name. Czech, Slovak, German and Hungarian forms exist.
• Ignoring the language and handwriting. Use the word lists.
• Skipping the censuses. They show households and places of birth.
• Assuming everything is online. Many Slovak records and some Czech records are not.
• Treating DNA as proof of nationality. Citizenship rests on documents.

Browse every guide in Genealogy Research. Sources include the Czechoslovak Genealogical Society International’s guide to using archives, My Czech Roots on vital records, a guide to Czech vital records and FamilySearch’s Slovakia church and synagogue books collection.

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